81470968 has 16 divisors (see below), whose sum is σ = 159400080. Its totient is φ = 38964288.

The previous prime is 81470957. The next prime is 81470971. The reversal of 81470968 is 86907418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221205 + ... + 221572.

It is an arithmetic number, because the mean of its divisors is an integer number (9962505).

Almost surely, 2^81470968 is an apocalyptic number.

It is an amenable number.

81470968 is a deficient number, since it is larger than the sum of its proper divisors (77929112).

81470968 is a wasteful number, since it uses less digits than its factorization.

81470968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442806 (or 442802 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 81470968 is about 9026.1269656481. The cubic root of 81470968 is about 433.5118354671.

The spelling of 81470968 in words is "eighty-one million, four hundred seventy thousand, nine hundred sixty-eight".